<template>
  <div class="app-container">
    讲师列表
      <!--查询表单-->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-input v-model="obj.name" placeholder="讲师名"/>
      </el-form-item>

      <el-form-item>
        <el-select v-model="obj.level" clearable placeholder="讲师头衔">
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>

      <el-form-item label="添加时间">
        <el-date-picker
          v-model="obj.begin"
          type="datetime"
          placeholder="选择开始时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>
      <el-form-item>
        <el-date-picker
          v-model="obj.end"
          type="datetime"
          placeholder="选择截止时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>

      <el-button type="primary" icon="el-icon-search" @click="fetchData()">查询</el-button>
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>

    <!-- 表格 -->
    <el-table
      v-loading="listLoading"
      :data="list"
      element-loading-text="数据加载中"
      border
      fit
      highlight-current-row>

      <el-table-column
        label="序号"
        width="70"
        align="center">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>

      <el-table-column prop="name" label="名称" width="80" />

      <el-table-column label="头衔" width="80">
        <template slot-scope="scope">
          {{ scope.row.level===1?'高级讲师':'首席讲师' }}
        </template>
      </el-table-column>

      <el-table-column prop="intro" label="资历" />

      <el-table-column prop="gmtCreate" label="添加时间" width="160"/>

      <el-table-column prop="sort" label="排序" width="60" />

      <el-table-column label="操作" width="200" align="center">
        <template slot-scope="scope">
          <router-link :to="'/teacher/edit/'+scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit">修改</el-button>
          </router-link>
          <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
     <!-- 分页 -->
    <el-pagination
      :current-page="page"
      :page-size="limit"
      :total="total"
      style="padding: 30px 0; text-align: center;"
      layout="total, prev, pager, next, jumper"
      @current-change="fetchData"
    />
  </div>
</template>
<script>
   import  teacher from '@/api/teacher'
   //import { getList } from  '@/api/teacher'

   export default {
     //数据初始化设置 
     data(){
       return {
          listLoading :true,//是否显示loading 信息 
          list:null ,//分页数据的集合
          total:0 ,//总记录数 
          page :1,//当前页 
          limit :10, //每页记录数 
          obj:{}//条件值 


       }
     },
     // 调用方法 获取渲染页面的数据  
     created(){
        this.fetchData()
     },
     methods: {
       //具体操作的方法 
        fetchData(page = 1){
            this.listLoading = true ;
            this.page = page  
            //调用api定义的方法获取到后台接口数据 
            teacher.getList(this.page,this.limit,this.obj).then(response =>{
              if(response.success){
                     this.total =   response.data.total
                     this.list = response.data.rows
              }
              this.listLoading = false  
            })

        },
        resetData(){
          this.obj = {} 
          this.fetchData()
        },
        removeDataById(id){

              // debugger
              this.$confirm('此操作将永久删除该记录, 是否继续?', '提示', {
                  confirmButtonText: '确定',
                  cancelButtonText: '取消',
                  type: 'warning'
              }).then(() => {
                //点击确定在这里执行 
                 //请求后台接口把返回数据return 下面执行  
                  return teacher.deleteTeacherId(id)
              }).then(() => {
                  this.fetchData()
                  this.$message({
                      type: 'success',
                      message: '删除成功!'
                  })
              }).catch((response) => { // 失败
                  if (response === 'cancel') {
                      this.$message({
                          type: 'info',
                          message: '已取消删除'
                      })
                  } else {
                      this.$message({
                          type: 'error',
                          message: '删除失败'
                      })
                  }
              })
        }
     }

   }
</script>
